Journal
BRAIN BEHAVIOR AND EVOLUTION
Volume 57, Issue 5, Pages 293-300Publisher
KARGER
DOI: 10.1159/000047247
Keywords
teleost fish; sex reversal; alternative mating tactics; neuroendocrine system
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Teleost fishes are the 'champions' of sexual plasticity among vertebrates. Several species have two male reproductive morphs with distinct suites of behavioral, somatic, neuronal, endocrinological, and life history traits. Here, we consider recent studies of the social and neural modulation of sexual plasticity for such species with a focus on two neuropeptides, gonadotropin releasing hormone (GnRH) and arginine vasotocin (AVT, teleostean analogue of mammalian arginine vasopressin). The major premise of this review is that phenotypic changes in GnRH and AVT expression in the brain can orchestrate events leading to changes in either sexual status or the expression of morph specific display behaviors important in reproduction. Copyright (C) 2001 S. Karger AG, Basel.
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